Outcome Measures The primary outcome of this study will be the proportion of patients with PCS at 30 days, defined as an increase from baseline of ≥ 3 symptoms on the validated RPQ at 1 month. Secondary outcomes will include change in RPQ from baseline to 72 hours, 7 days, 14 days, 30 days post initial ED visit, number of missed days of school or work and repeat visits to a healthcare provider. To assess compliance with ED discharge instructions, patients will be asked to complete a daily activity journal and will be given step counters.